Door stopper



FIG. 1 is a first perspective view of a door stopper, showing my new design;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a front elevation view of the door stopper shown in FIG. 1;

FIG. 4 is a rear elevation view of the door stopper shown in FIG. 1;

FIG. 5 is a left side elevation view of the door stopper shown in FIG. 1;

FIG. 6 is a right side elevation view of the door stopper shown in FIG. 1;

FIG. 7 is a top plan view of the door stopper shown in FIG. 1;

FIG. 8 is a bottom plan view of the door stopper shown in FIG. 1; and,

FIG. 9 is a perspective view of the door stopper in an environment in which it may be used. 

CLAIM The ornamental design for a door stopper, as shown and described. 